All my 3 babies were tummy sleepers from day dot! I was guilty until i had my 3rd and was told by a paed that in her experience tummy sleeping is often seen with babies who are strong (able to hold their heads up off the bed for short stints soon after birth) and that it also seems to run in families. She said it was about 1 in 9 or 10 babies.

We never had the central heating on at night because I find it dries out my nose and throat so didn't allow it! We also made sure we didn't use bumpers when they slept in the cot but they co-slept with me alot too.

Make sure the mattress is firm, have good ventilation, don't over wrap (I never swaddled mine) and follow all the other sleeping guidelines